The speed seems to be very variable, last night it was dreadful, very disappointing. There are times when only 1 person in the house can use it effectively.
I did the speedtest this morning ( it's no way as bad as last night) and this was the result:
I'd be interested to see what speeds others are getting - if you have 3 minutes to spare go to SPEEDTEST.NET
Just click "Begin Test", then let me know in comments.